83626921 has 16 divisors (see below), whose sum is σ = 99388800. Its totient is φ = 68872320.

The previous prime is 83626909. The next prime is 83626931. The reversal of 83626921 is 12962638.

It is a cyclic number.

It is not a de Polignac number, because 83626921 - 2⁹ = 83626409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (83626931) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17055 + ... + 21403.

It is an arithmetic number, because the mean of its divisors is an integer number (6211800).

Almost surely, 2^83626921 is an apocalyptic number.

It is an amenable number.

83626921 is a deficient number, since it is larger than the sum of its proper divisors (15761879).

83626921 is a wasteful number, since it uses less digits than its factorization.

83626921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4464.

The product of its digits is 31104, while the sum is 37.

The square root of 83626921 is about 9144.7756123374. The cubic root of 83626921 is about 437.3025760678.

The spelling of 83626921 in words is "eighty-three million, six hundred twenty-six thousand, nine hundred twenty-one".